ATLAS · MEGA-CITIES · UNITED STATES
Mega-Cities of United States
United States has 5 urban areas of five million people or more — New York City, Los Angeles, Chicago, Miami and Philadelphia. The largest, New York City, holds an estimated 19,040,000people across its urban agglomeration — one of the largest cities on Earth. From Natural Earth, snapshot 2026-06-24.
MEGA-CITIESNew York City, Los Angeles, Chicago, Miami and Philadelphia
LARGEST (POPULATION)~19,040,000
NUMBER OF MEGA-CITIES5
The 5 mega-cities
Each urban area, with its estimated agglomeration population, largest first.
New York City~19,040,000 people
Los Angeles~12,500,000 people
Chicago~8,990,000 people
Miami~5,585,000 people
Philadelphia~5,492,000 people
In context
Where United States's largest mega-citysits on the world’s scale of mega-cities — from the cities just over five million to the singular supergiant above twenty.
20M+
15–20MNew York City is here
10–15M
7–10M
5–7M